Messages in this thread | | | Date | Tue, 1 Apr 1997 11:54:42 +0200 (MET DST) | From | Ingo Molnar <> | Subject | Re: uaccess.h reimplementation, patch, 2.1.30 |
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On Mon, 31 Mar 1997, Paul Gortmaker wrote:
> > I'm curious wether the speed/size+cache locality improvement seen by Paul > > Gortmaker stands for this implementation too. > > Okay, as soon as I saw Linus mention the broken WP support, I realized why > defining access_ok() to 1 was such a gain on i386. [...]
duh for some reason i thought it was an i486.
The code should make the least difference on an i486: no segment descriptor cache, no branch predicion (which could go wrong), no aggressive prefetching.
i think if there is any difference visible in macro-benchmarks, then on P5-s.
-- mingo
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